Split roller-bearing.



J. NEWMANN. i sm@ ROLLER Emma.

APPLICATION FILED SEPT. 11i1911. d Patented Sept. 3,1%21

2 SHEETS-amm i.

wwwa?? L ,NEWMANBL SPLIT ,ROLLER BEARING. APPLICATION FILED SEPT. 11, 1911.

LB'Q-l, y Patented Sept, 3,1912.

d 2 SHEETS-SHEET 2.

rrnn sfr-Arne PA'rENT OFFICE.

kJenn NEWMANN, or BROOKLYN, NEW YORK.

SPLIT ROLLER-BEARING. A

Specvcation of .Letters latent.

Patented Sept. 3, 1912.

Application file tl September 411, 1911. Serial No. 648,767.

T zz whom a may @mem Be it known tha 'JOHN NEWMANN, 'az

' citizen of the United 'States' of America, re- E Siding ,a B

roller bearings.

rooklyn, inthe county ofv Kings and State ofNew York, have invented certain new and useful Im rovements Split '1 Roller-Bearings, of whic the following 1s af specification. .j

-The present 'invention relates to roller bearings of the type specified in my Unlted States LettersPateut No. 969,763kv and'No. 1,001,673 and particularly to so calledsplit The' roller bearings constructed in accordance with my U. S. patents above referred to ,are composed of loose individual parts comprising rollers, blocks 'or spacers and balls borne 1n said blocks and `resting against vthe free ends of the rollers.

The object of my invention is ,to further improve such bearing and particularly/,the

' split roller bearing, and provide means enabling me to take the split bearing'box apart without re uiring the disassembling or prevent the fa ling apart of the parts.

My invention also relates to the .construction,combination and arrangement of parts as will hereinafter be fully specified and claimed. j

To make my invention more clear, the same is illustrated in the accompanying drawing, in which similar reference-letters denote corresponding parts and'in which- Figure 1 is an inner View of one' ofthe hearing box sections showing the rollers vand spacers locked therein in assembled position; Fig. 2 is a similar View showing the inner bushing or shell in position; Fig. 3*

^ is a cross section on line 3-3 of Fig. 1; Figs.

4 .and 5 arerespectively an end View anda perspective view of an individual spacer; Fig. 6 is a longitudinal section through an individual roller; Fig. is an enlarged longitudinal section through the bearing box; F ig.. 8 isa cross section through the inner bushing;` Fig. 9 is apart of a longitudinal section on line 9 9 of fFig. l0 showing-a modified construction; Fig. 10 is an end View thereof partly in section and Figs. 11 and 12 are details thereof.

In my split roller bearing, the outer shell or box is longitudinall' divided into two sections .or halves a and which are adapted to-be de'rachably fastened together'by means of screws c. Each half is formed internally witn a groove d, in which ahardened and ground `steel shell or bushingfis Iixed, which also is longitudinally divided into two sections or halves e, e", so that one half may 'be fixed in one section of-the bearing box and the other in the other section of the same. For the purpose to be hereafter ex.;

'lain'ed, the section ylane e of thev saidbush-- in g at each side is not made straight, but V- shaped br 'dove-tailed, Neither is the section line made uniform at both sides of the bushing, but atone side the slanting edges -are directed inwardlyv and at the other side outwardly.` The ends e2 of the dove-tailed -edges at one side and the central part or apex e3 at the other side in each section of the inner bushing. are made to 'slightly' project from within therespective box sections, so as to facilitate the proper adjustment of the box sections in position on top of one another. The innerA bushing, or rather, each half thereof, has en -its inner circumference an annular groove e, the surface of which is ground and which serves as a lraceway for the rollers adapted to re'- volve thereon.l At .each end, the box sections a, Z) are lprovided with ooves c', Z1 respectively to belled withv elt, or the like, for preventing the entering'of dust into the bearing and serving to retain the lubricating oil.

The roller cage is composed of individual rollers f, loose blocks g interposed between the same, and which at the ends are formed with perforations g containing balls that are adapted to laterally project outwardly therefrom, so as to bear against the reduced ends f of the rollers. The middle portion of the rollers is adapted-to bear on the ground surface of the annular groove .in the inner bushing and the shoulders formed at the ends of the 'said middle port-ion together with the lateraledges of the annular groove will act as stops preventingthe rollers from leaving the said annular' groove. The con v struction' of the loose blocks and rollers is substantially the same 'as that in my roller bearings specified in the patents above re.- ferred to and does notrequire any further description. There is, however, one novel feature connected with tlierollers used in the present roller bearing, which consists in that the rollers are made .hollow or drawn so as to ferm a longitudinal and centrally ex;

Awhich is divided into two sections or halves ia, b detachably joined by screws j.- This bushingis adapted to be mounted on the shaft or axle and to form an. inner raceway for the rollers. rl`he same is of hardened and ground steel and formed at its ends with anges i. The section line 'i2 of the bushing is V-shaped or dove-tailed and made in every other respect similar to that of the outer shell ea, el. The purpose of this in both cases is to afford the rollers an absolutely smooth race-way, as, no matter how exactthe grinding of the surface is done, the joint of the two halves of the shells always forms an edge, by which the rollers are hindered in their free motion. When the edge is made on a straight line, the rollers encounter this obstruction on their entire length and the operation of the roller bearing often fails. By making the joint or the section line of the two-halves of the outer and inner shell on a slant or V-shaped, the rollers, while revolving over the raceways, only gradually encounter the obstruction and the free motion thereof is only veryA little affected.

For the purpose of securing the individual parts in assembled position in each half of t-he box, soA that the latter at any time -may be taken apart and removed from thev shaft, I provide members, as for instance, wires la that are adapted to be used only when it is required to temporarily lock the parts in assembled position. I also provide perforations Z in the ends of the box sections a, b, inthe present example, two at each end, which are arranged in alinement with the holes of the two rollers lying nearestt the adjoining edges of the box sections, so that the wires or rods 7c may be stuck through the said perforations and rollers locking the parts in assembled post tion. These wires or rods will be used only when the box is to be taken apart. It will be noticed, that when the parts are thus locked in the Arespective box sections a, b, there will be two blocks left unlocked or loose, which upon the taking apart of the box may fall out or remain loosely resting in the .latten However, this is not objectionable, as long as the greatest number of the parts remain in assembled position.

In the modification shown in Figs. 9 to 12 inclusive, I have shown a roller bearing for a lieavy,load,'wliich is composed of rollers m and short, loose blocks n, inter- To this end,`

posed between the ends thereof. In this case, the free ends m of tlie rollers are formed with annular spherical grooves m2 in which bear the balls o contained in the spacers or blocks n. Such construction is "used preferably with large sizedbearings for heavy loads and affords much saving of material. a

Since various modifications may be made without departing from the spirit of my invention by those skilled in the art, I do not Wish to restrict myself to the particular construction specified and shown.

What I claim and desire to secure by Letters Patent is:

l. In a split roller bearing, a sectional louter shell or box, hollow rollers therein,

with their middle portion on the ground surface of the annular groove in the said shell, loose blocks interposed between saidv rollers and serving as spacers and means adapted to be temporarily passed through the said hollow rollers to temporarily lock the parts in assembled position in each box section.

3. In a splitv roller bearing, a sectional box, ar sectional hardened shell fixed'in said box and having onits inner circumference an annular groove the surface of which is ground and forms an outer raceway, hollow rollers having reduced ends and bearing with their middle portion on the ground surface of the annular groove in the said shell, loose perforated blocks interposed between said rollers, balls borne in said perforations and projecting laterally outward to bear against said rollers and means adapted to be temporarily passed i through the said hollow rollers to teinporarily lock the parts in assembled position in each box section.

4. In a split roller bearing, hollow rollers having reduced and grooved ends, loose perfora-ted blocks interposed between the said reduced ends of the said rollers and balls contained in. said perforated blocks and projecting laterally outward to bear inthe grooves of saidrollers.

5. In a split roller bearing, a box divided into two sections each having holes in its end faces, hollow rollers in said box, loose blocks interposed between saidrollers and wires adapted to be temporarily passed through the said holes of the box sections and the hollow rollers to temporarily lock the parts in assembled position in each box section.

6. `In a split roller bearing, a sectioral box having holes in its end faces, a sectional hardened-shell fixed in said box and having on its inner circumfe ence an annular groove the inner surf-ire of which is ground and forms an outer raceway, hollow rollers having reduced ends and bearing with their middle portion .on the ground surface of the said annular groove, loose blocks interposed between said rollers and means adapted to be temporarily passed through the said holes of the sectional box and through the said hollow rollers to temporarily lock the parts in assembled position in each box section.

7. In a split roller bearing, a sectional box having holes in its end faces, a sectional hardened shell iixed in said box and having on its inner circumference groove forming an outer raceway, a loose sectional and hardened shell forming an inner raceway, hollow rollers having reduced ends and bearing on one side against the said loose shell and on the outer side against the ground surface of'the annular groove of the iixed shell, loose bloclrsinterposed between said rollers and means adapted to be temporarily-passed through said holes of the said box sections and through the said hollow rollers to temporarily lock the parts in assembled position in each box section.

In testimony whereof l affix my signature in presence of two witnesses.

J OHN NEll/Yll/IANN.

lVitnesses JOHN T. Canaronr, Max D. ORDMANN.

qopies vof this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

an annular- 

